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TI-2021-12930 Aliases CVE-2021-33535GHSA-79h3-q6m5-2593

WEIDMUELLER: WLAN devices affected by exploitable format string vulnerability

Priority MEDIUM 41CWE-134Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-134 and the CVSS impact.

Summary

In Weidmueller Industrial WLAN devices in multiple versions an exploitable format string vulnerability exists in the iw_console conio_writestr functionality. A specially crafted time server entry can cause an overflow of the time server buffer, resulting in remote code execution. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

Why it matters now

EPSS 0.0161 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
WeidmuellerIE-WL(T)-BL-AP-CL-XXIE-WL-BL-AP-CL-EU (2536600000) – V1.16.18 (Build 18081617); IE-WLT-BL-AP-CL-EU (2536650000) – V1.16.18 (Build 18081617); IE-WL-BL-AP-CL-US (2536660000) – V1.16.18 (Build 18081617); IE-WLT-BL-AP-CL-US (2536670000) – V1.16.18 (Build 18081617)—No fix listedCNA
WeidmuellerIE-WL(T)-VL-AP-CL-XXIE-WL-VL-AP-BR-CL-EU (2536680000) – V1.11.10 (Build 18122616); IE-WLT-VL-AP-BR-CL-EU (2536690000) – V1.11.10 (Build 18122616); IE-WL-VL-AP-BR-CL-US (2536700000) – V1.11.10 (Build 18122616); IE-WLT-VL-AP-BR-CL-US (2536710000) – V1.11.10 (Build 18122616)—No fix listedCNA
  • IE-WL(T)-BL-AP-CL-XX VendorWeidmueller Affected IE-WL-BL-AP-CL-EU (2536600000) – V1.16.18 (Build 18081617); IE-WLT-BL-AP-CL-EU (2536650000) – V1.16.18 (Build 18081617); IE-WL-BL-AP-CL-US (2536660000) – V1.16.18 (Build 18081617); IE-WLT-BL-AP-CL-US (2536670000) – V1.16.18 (Build 18081617) Fixed in — No fix listed CNA
  • IE-WL(T)-VL-AP-CL-XX VendorWeidmueller Affected IE-WL-VL-AP-BR-CL-EU (2536680000) – V1.11.10 (Build 18122616); IE-WLT-VL-AP-BR-CL-EU (2536690000) – V1.11.10 (Build 18122616); IE-WL-VL-AP-BR-CL-US (2536700000) – V1.11.10 (Build 18122616); IE-WLT-VL-AP-BR-CL-US (2536710000) – V1.11.10 (Build 18122616) Fixed in — No fix listed CNA

CPE configurations NVD · 24

CPEVersionsRoleVendor
cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wl-bl-ap-cl-eu:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wlt-bl-ap-cl-eu:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wl-bl-ap-cl-us:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wlt-bl-ap-cl-us:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wl-vl-ap-br-cl-eu:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
  • cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wl-bl-ap-cl-eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wlt-bl-ap-cl-eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wl-bl-ap-cl-us:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wlt-bl-ap-cl-us:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wl-vl-ap-br-cl-eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
Show 14 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wlt-vl-ap-br-cl-eu:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wl-vl-ap-br-cl-us:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.16.18VulnerableWeidmueller
cpe:2.3:h:weidmueller:ie-wlt-vl-ap-br-cl-us:-:*:*:*:*:*:*:*not specified by NVDRunning onWeidmueller
cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:*up to 1.11.10VulnerableWeidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wlt-vl-ap-br-cl-eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wl-vl-ap-br-cl-us:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.16.18 Vulnerable ·Weidmueller
  • cpe:2.3:h:weidmueller:ie-wlt-vl-ap-br-cl-us:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-bl-ap-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-eu_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wl-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller
  • cpe:2.3:o:weidmueller:ie-wlt-vl-ap-br-cl-us_firmware:*:*:*:*:*:*:*:* Versions up to 1.11.10 Vulnerable ·Weidmueller

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33535
  2. 2026-10-03 Alias added: GHSA-79h3-q6m5-2593

References

Advisory 1

  • TI-2021-12928 WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12927 WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12925 WEIDMUELLER: WLAN devices affected by OS Command Injection vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12932 WEIDMUELLER: WLAN devices affected by Remote Code Execution (RCE) vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12933 WEIDMUELLER: WLAN devices affected by improper access control vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-12923 WEIDMUELLER: WLAN devices affected by privilege escalation vulnerability CVSS 3.1HIGH 8.8
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences